Remove unused html snippet

aleksis/apps/alsijil/templates/alsijil/partials/mark_as_buttons.html

-{% load i18n %}
-<span class="input-field inline">
-    <select class="inline" name="excuse_type">
-        <option value="e" selected>{% trans "Excused" %}</option>
-        {% for excuse_type in excuse_types %}
-            <option value="{{ excuse_type.pk }}">{{ excuse_type.name }}</option>
-        {% endfor %}
-    </select>
-</span>
-<button type="submit" class="btn secondary-color">
-    {% trans "Submit" %}<i class="material-icons right">send</i>
-</button>